This model is impossible to implement now. The shape of the galaxy is like an elliptical galaxy, with a large and thick disk of dust around. Such models are unsupported now. Look at M104, the shape is quite similar.

By the way, I made a model for NGC 4459. Nobody asked for it, but I have this model prepared.

Just because you work on something doesn't mean that it's possible. I've worked on impossible things before. You don't realize it's impossible until you get to the end and discover that it can't be done.

Voekoevaka, you used the wrong color for the dust sprites, that's why they look blue. Dust colors in 0.97 are inverted, they show the color that is absorbed, not the color that the dust appears to be. It's like a photo negative. Look at the color for the default models for reference (it's probably best just to use the default color for all dust).